I had a great stay at Fai's (onlanda) place. The condo is brand new and the room was spotless.
The facilities (swimming pool, gym etc) are modern and of a very high standard.
On nut is a great area, there is delicious food, massage shops, 7-eleven etc on your doorstep. . The condo is very close to the BTS and there is a huge Tesco supermarket there. On nut station is only 2/3 stations from central Sukhumvit (5 mins).
The room is delightfully decorated and the view from the bedroom is stunning. The huge window makes it bright and spacious while black out blinds keep in dark in the morning.
Fai was a great host, she went out of her way to help me and I was able to extend my stay.
For the price and location, it can't be beat. I will come back next time in Bangkok for sure.